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US 3,985,056 AGranted
Multiple tool holding punching unit
AssigneeAmada Company, Limited
InventorMoichi Oseto
Life of this patent
Estimating the term…
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AssigneeAmada Company, Limited
InventorMoichi Oseto
Estimating the term…
This disclosure relates to a punching apparatus for perforating sheet materials, and comprises a multiple tool holding unit mounted on a press table beneath a vertically movable press ram. The tool holding unit includes a horizontally extending upper arm having a horizontally swingably journalled holding member disposed at the free end thereof. The punch holding member is provided with a plurality of punch holding bores which may be selectively positioned beneath the press ram whereby holes of different diameter may be punched in the sheet material. The punching unit further includes a lower arm disposed beneath the horizontally extending upper arm, and includes a die holding bore having the configuration of two half circles connected with each other by two parallel lines running in the same horizontal direction as the lower arm and is further provided with a horizontally movable clamping member.
A punching unit comprising a horizontally extending upper arm having a punch holding member pivotally mounted thereon about a vertical axis, said member including a plurality of punch holding bores, a horizontally extending lower arm having a die holding bore formed therein, means for rotating said punch holding member about said axis to index selected ones of said punch holding bores into overlaying registry with said die holding bore, said punch holding member having a configuration defining a sector which does not overlay said die holding bore throughout a given angular extent of the rotation thereof thereby facilitating removal and replacement of dies in said die holding bore, said upper arm having a main body portion connected to and extending generally parallel to said lower arm, and a free end laterally offset from said main body portion, said punch holding member being mounted on said free end.
A punching unit comprising a horizontally extending upper arm having a punch holding member pivotally mounted thereon about a vertical axis, said member including a plurality of punch holding bores, a horizontally extending lower arm having a die holding bore formed therein, means for rotating said punch holding member about said axis to index selected ones of said punch holding bores into overlaying registry with said die holding bore, said punch holding member having a configuration defining a sector which does not overlay said die holding bore throughout a given angular extent of the rotation thereof thereby facilitating removal and replacement of dies in said die holding bore, said die holding bore having a slot-like configuration of substantially oval shape, and a clamping member received in a recess in a wall of said bore and horizontally movable into said die holding bore for securing a die therein.
Dependencies are inferred from the claim text.